Mathematical and Physical Journal
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Problem K. 466. (September 2015)

K. 466. How many integers are there from 1 to 2015 such that their decimal representation contains a digit of 5, but does not contain any digit of 7?

(6 pont)

Deadline expired on October 12, 2015.


Statistics:

149 students sent a solution.
6 points:Bachmann Laura Adrienne, Bartha Ákos, Bertók Zsanett, Dékány Barnabás, Dobák Dániel, Erdei Márk, Farkas Norbert, Földvári Ádám, Gazsi Ádám, Gungl Brigitta, Háder Márk István, Hoffman Gréta, Hoffmann Balázs, Horváth 713 Alíz, Huszár Mária, Kiss 468 Péter, Kluèka Vivien, Koleszár Panna, Koltai Dániel, Kovács 161 Márton Soma, Kovács 576 Kristóf, Magyar Gergely, Marshall Tamás, Mészáros 916 Márton, Miskolczi Abigél, Pálvölgyi Szilveszter, Pinke Jakab Zoltán, Póta Balázs, Radnai Viktor, Sal Dávid, Szakács 125 Benedek, Szűcs Leó, Varga 294 Ákos, Verebélyi Réka, Zsótér Laura.
5 points:24 students.
4 points:16 students.
3 points:16 students.
2 points:26 students.
1 point:19 students.
0 point:13 students.

Problems in Mathematics of KöMaL, September 2015